How can I make my ideas clearer and more logical?

The clarity of your writing depends on how you progress from one idea to the next. The links between the ideas must be obvious to the reader. Ways to achieve this include:

Constructing a well thought-out plan – you should have a good idea of where you’re going to finish before you start.

Establishing connections between sentences: the topic of each sentence should not come as a surprise to the reader – topics should connect to the main idea of the paragraph or to something in the previous sentence.

your interpretation of how ideas are related to each other should be made clear through connectors (i.e. conjunctions, such as however, similarly, if, because, etc.) or other expressions showing relationships (e.g. X caused Y or Y is the result of X, etc).